<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        .box {
            width:100px;
            height:100px;
            background-color: red;
            border:3px solid blue;
            margin:10px;
        }
    </style>
</head>
<body>
<div class="box"></div>
<span class="box"></span>
</body>
</html>
